Synthesis of superparamagnetic GdFeO3 nanoparticles using a free impinging-jets microreactor

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Synthesis of superparamagnetic GdFeO₃ nanoparticles using a free impinging-jets microreactor. / Albadi, Y.; Sirotkin, A. A.; Semenov, V. G.; Abiev, R. S.; Popkov, V. I.

In: Russian Chemical Bulletin, Vol. 69, No. 7, 01.07.2020, p. 1290-1295.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{66ae11121c0e42d380c614c0fd3969f3,

title = "Synthesis of superparamagnetic GdFeO3 nanoparticles using a free impinging-jets microreactor",

abstract = "Gadolinium orthoferrite GdFeO3 nanoparticles were synthesized by co-precipitation of gadolinium and iron(m) hydroxides in a free impinging-jets microreactor followed by thermal treatment of co-precipitation products. According to X-ray diffraction, the co-precipitated hydroxides were X-ray amorphous, and the content of key elements within their composition corresponded to the stoichiometry of GdFeO3. Powder X-ray diffraction of the product of thermal treatment of hydroxides at 750 °C for 4 h indicated on the formation of GdFeO3 nanocrystals with a perovskite-like orthorhombic structure and an average crystallite size of 27±3 nm. Scanning electron microscopy showed that the gadolinium orthoferrite nanocrystals had an isometric morphology, and their specific surface area was determined by the Brunauer—Emmett—Teller method to be 13.55 m2g−1. M{\"o}ssbauer spectroscopy and vibrational magnetometry showed that the obtained GdFeO3 nanoparticles were superparamagnetic and were characterized by a bimodal distribution of the effective field, indicating on their core—shell-type composite structure. The study of the composition, structure, morphology, and magnetic behavior of the obtained gadolinium orthoferrite nanoparticles showed that they can be used as a basis for contrast agents for magnetic resonance imaging (MRI).",

keywords = "co-precipitation, free impinging-jets microreactor, gadolinium orthoferrite, perovskites, superparamagnetic nanoparticles, FORMATION MECHANISM, GDFEO3 NANOPARTICLES, ORTHOFERRITE, NANOCRYSTALLINE, HEAT-TREATMENT, BIFEO3",

author = "Y. Albadi and Sirotkin, {A. A.} and Semenov, {V. G.} and Abiev, {R. S.} and Popkov, {V. I.}",

year = "2020",

month = jul,

day = "1",

doi = "10.1007/s11172-020-2900-x",

language = "English",

volume = "69",

pages = "1290--1295",

journal = "Russian Chemical Bulletin",

issn = "1066-5285",

publisher = "Springer Nature",

number = "7",

}

RIS

TY - JOUR

T1 - Synthesis of superparamagnetic GdFeO3 nanoparticles using a free impinging-jets microreactor

AU - Albadi, Y.

AU - Sirotkin, A. A.

AU - Semenov, V. G.

AU - Abiev, R. S.

AU - Popkov, V. I.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Gadolinium orthoferrite GdFeO3 nanoparticles were synthesized by co-precipitation of gadolinium and iron(m) hydroxides in a free impinging-jets microreactor followed by thermal treatment of co-precipitation products. According to X-ray diffraction, the co-precipitated hydroxides were X-ray amorphous, and the content of key elements within their composition corresponded to the stoichiometry of GdFeO3. Powder X-ray diffraction of the product of thermal treatment of hydroxides at 750 °C for 4 h indicated on the formation of GdFeO3 nanocrystals with a perovskite-like orthorhombic structure and an average crystallite size of 27±3 nm. Scanning electron microscopy showed that the gadolinium orthoferrite nanocrystals had an isometric morphology, and their specific surface area was determined by the Brunauer—Emmett—Teller method to be 13.55 m2g−1. Mössbauer spectroscopy and vibrational magnetometry showed that the obtained GdFeO3 nanoparticles were superparamagnetic and were characterized by a bimodal distribution of the effective field, indicating on their core—shell-type composite structure. The study of the composition, structure, morphology, and magnetic behavior of the obtained gadolinium orthoferrite nanoparticles showed that they can be used as a basis for contrast agents for magnetic resonance imaging (MRI).

AB - Gadolinium orthoferrite GdFeO3 nanoparticles were synthesized by co-precipitation of gadolinium and iron(m) hydroxides in a free impinging-jets microreactor followed by thermal treatment of co-precipitation products. According to X-ray diffraction, the co-precipitated hydroxides were X-ray amorphous, and the content of key elements within their composition corresponded to the stoichiometry of GdFeO3. Powder X-ray diffraction of the product of thermal treatment of hydroxides at 750 °C for 4 h indicated on the formation of GdFeO3 nanocrystals with a perovskite-like orthorhombic structure and an average crystallite size of 27±3 nm. Scanning electron microscopy showed that the gadolinium orthoferrite nanocrystals had an isometric morphology, and their specific surface area was determined by the Brunauer—Emmett—Teller method to be 13.55 m2g−1. Mössbauer spectroscopy and vibrational magnetometry showed that the obtained GdFeO3 nanoparticles were superparamagnetic and were characterized by a bimodal distribution of the effective field, indicating on their core—shell-type composite structure. The study of the composition, structure, morphology, and magnetic behavior of the obtained gadolinium orthoferrite nanoparticles showed that they can be used as a basis for contrast agents for magnetic resonance imaging (MRI).

KW - co-precipitation

KW - free impinging-jets microreactor

KW - gadolinium orthoferrite

KW - perovskites

KW - superparamagnetic nanoparticles

KW - FORMATION MECHANISM

KW - GDFEO3 NANOPARTICLES

KW - ORTHOFERRITE

KW - NANOCRYSTALLINE

KW - HEAT-TREATMENT

KW - BIFEO3

UR - http://www.scopus.com/inward/record.url?scp=85090112115&partnerID=8YFLogxK

U2 - 10.1007/s11172-020-2900-x

DO - 10.1007/s11172-020-2900-x

M3 - Article

AN - SCOPUS:85090112115

VL - 69

SP - 1290

EP - 1295

JO - Russian Chemical Bulletin

JF - Russian Chemical Bulletin

SN - 1066-5285

IS - 7

ER -

ID: 70756003